微晶刚玉砂轮磨削钛合金TC17试验研究  

Experimental research on grinding performance of TC17 alloy with microcrystalline alumina grinding wheels

作　　者：董志刚[1] 曹克[1] 康仁科[1] 郝丙君 郑非非[1] 

机构地区：[1]大连理工大学精密与特种加工教育部重点实验室,大连116024

出　　处：《金刚石与磨料磨具工程》2015年第2期14-20,共7页Diamond & Abrasives Engineering

基　　金："高档数控机床与基础制造装备"科技重大专项(20122X04003081-05);国家高技术研究发展计划(863计划)课题(2013AA040104);国家重点基础研究发展计划(973计划)课题(2011CB013201);国家商用飞机制造工程技术研究中心创新基金项目(201301942)

摘　　要：使用大气孔与普通气孔两种微晶刚玉砂轮开展钛合金磨削试验,研究磨削参数与气孔尺寸对磨削工件表面完整性的影响。试验结果表明:砂轮转速27m/s,磨削深度10μm时,可获得较好的表面质量;同普通砂轮相比,大气孔微晶刚玉砂轮磨削钛合金工件的表面质量更好、微观组织变化和表面残余应力更小。大气孔砂轮具有较好的容屑、排屑、冷却能力,使磨削温度降低、磨削力减小,是获得较好表面完整性的主要原因。Grinding experiments of titanium alloy were conducted with two kinds of microcrystalline alumina grinding wheels, namely normal kind and large-pore kind, to investigate the influence of grinding parameters and pore size on the grinding surface integrity. Results showed that high grinding speed （27 m/s） and moderate cutting depth （10μm） performed better. Compared with normal kind, large-pore kind microcrystalline alumina would lead to better grinding quality, little microstructure change and smaller surface residual stress. It was inferred that large chip space and excellent cooling capacity of large pores could reduce the grinding force and temperature, which might be the dominant reason of better surface integrity.

关 键 词：钛合金 微晶刚玉砂轮 砂轮气孔 磨削参数 表面完整性 

分 类 号：TG74[金属学及工艺—刀具与模具] TG58